Motive-fluid-supply valve.



' E. HUBBARD.

MOTIVE FLUID SUPPLY VALVE.

APPLICATION FILED JAN.13,1909.

999,033, Patented July 25, 1911.

UNTED TAT% PATENT FFTQ,

EBER HUBBARD, OF CHICAGO, ILLINOIS.

MOTIVE-FLUID-SUPPLY VALVE.

Original application filed. July 6, 1908, Serial No. 441,945. Dividedand this application filed January 13,

Serial No. 472,078.

To all whom it may concern:

Be it known that I, EBER HUBBARD, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in ivfotive-Fluid- Supply Valvesfor Internal-Combustion Motors, of which the following is aspecification, reference being had to the drawings forming a partthereof.

This application is a division of my pending application Serial No.441,945, filed July 6, 1908.

The purpose of this invention is to provide an improved device of thenature of a valve and regulating means for the same for controlling theinlet for the motive fluid to the carbureter or mixer of the explosivefluid motor, particularly adapted for controlling the inlet of theliquid which re quires distribution over an extended surface in order toobtain the necessary exposure for vaporization and air admixture. Itconsists in the features of construction shown and described asindicated in the claims.

In the drawings :Figure 1 is a section of a carbureter provided withthis invention, section being axial with respect to the supply inletvalve and the main outlet valve from the carbureter to the motor. Fig. 2is a section at the line 2-2 on Fig. -1.

The carbureter shown in the drawings is of form adapted to be attachedto the cylinder of gas engine covering the inlet port and comprising forthat purpose the hood or chamber 1, into which the motive fluid is drawnpast the valve, 2, which controls the outlet from the carbureting ormixing chamber, 3. The valve, 2, is shown connected with a governingdevice, the particular character and operation of which constitutes nopart of this invention and need not be further described. It is,however, fully described and illustrated in my pending applicationSerial No. 441,993, filed in the United States Patent Office July 6,1908. The chamber, 3, is open for inlet of air at the end remote fromthat near which the valve, 2, is located, said end opening being clearlyshown at 4. The liquid supply for motive fluid is admitted from a pipe,5, past a shut-off valve, 6, which is operated at will and enters thecarbureting chamber, 3, through the bottom wall of that chamber,

Specification of Letters Patent.

Patented July 25, 1911.

which is preferably fiat; that is, of slight height or depth incomparison with its width, as can be understood by comparison of Figs. 1and 2. The bottom wall of said chamber is provided with an inwardlyextending boss, 7, which has a flat upper surface and is penetrated atthe center by the inlet aperture from the valve, 6, with whichconnection is made by a nipple, 8, so that the supply of liquiddischarged within the chamber, 3, at the center of the fiat surface ortablet afforded by the top of the boss, 7, may flow over said tablet andthereby present a large area to the air for mixture therewith. The capplate, 9, of the chamber, 3, affords guide bearing for the spindle, 10,of a disk valve, 11, which matches and faces the tablet formed by theboss, 7, in the chamber, 3, and is adapted to be lodged thereon andoperated as a shut-off valve at the inlet aperture at the center of saidtablet. To afford efl ective guidance for the spindle, 10, there isformed upon the cap plate an upstanding boss, 12, which is boredthroughout for the spindle and also accommodates in the bore above theend of the spindle a spring, 13, which operates to yieldingly seat thedisk valve, 11, on the tablet, 7, a plug, 14, secured into the upper endof the aperture in the boss serving to tension and retain the spring inaction upon the end of the spindle. The stem, 15, of the valve, 2, obtains guidance by extending through a cap plate of the chamber, 3. Saidstem, 15, of the valve, 2, is connected with the spindle, 10, of thedisk, 11, by a lever, 17, for which there is provided a movable fulcrum,18, mounted for sliding on the cap plate, 9, of the chamber, 3. Theposition of said fulcrum is designed to be adjusted so as to make theamount of motive fiuid admitted past the disk valve, 11, such relativelyto the amount of motive fluid admitted past the valve, 2, as to renderthe mixture most effective for explosion, and the position of thefulcrum will therefore ordinarily require adjustment only upon change incharacter of the motive fluid, but may at all times be adjusted toobtain the best results with the particular motive fluid used.

It will be observed that in practice the liquid supply conducted throughthe nipple, 8, being necessarily led from a source sufficiently higherthan the tablet, 28, to be discharged therefrom when the valve is open,

is at all times pressing upward against the under side of the flat valvedisk, so that upon the slightest lifting of the disk from the tablet thesupply spreads over the under face of the disk as well as the upper faceof the tablet, and however thin the crevice opened the supply is thusdispersed over double the area of the tablet, and the air drawn inthrough the open end, 4:, of the chamber is drawn through this narrowcrevice and between the two films of liquid upon the two opposedsurfaces respectively of the tablet and disk valve. There results a verythorough atomizing of the liquid supply by the action of the air wipingit off the two surfaces, and it is thus put into condition for verythorough mixture with the air; not only that entering thus between thetwo surfaces and operating as the means of taking up the oil, but alsowith the remaining quantity which enters through the open end, 4, andpasses around the valve and tablet. Any remnant of oil remaining on thesurfaces of the tablet and valve disk after each inward suction isthoroughly spread over the two disks, and if in sufficient quantity forsuch result is splattered and finely sprayed out from between themaround the. entire circumference upon the closing of the disk down ontothe tablet, and is thereby thoroughly diffused for the next action,-that is, upon the next opening of the valve and intake of air. Theextent of opening of the disk valve, 11.,required for the maximum supplyis very slight in comparison with the opening of the valve, 2, andnevertheless, the proper relation being once established between thearea of the tablet, 7, and disk valve, 11, on the one hand, and thediameter of the valve, 2, the proper ratio between the two openings forall operations of the engine is substantially constant; and it will benoticed that the rate of supply of the motive fluid with any givenopening of the disk valve is dependent not upon the size of the port orthe diameter of the aperture through the nipple, 8, but, as indicated inthe foregoing statement, upon the area of the tablet and disk valve, thecapacity through the nipple, 8, being intentionally far in excess of themaximum requirement of the engine so that the opening effected betweenthe tab let and the disk valve will not even closely approximate thetotal capacity or possible rate of supply through the nipple, 8. Thereis thus avoided all danger of clogging in the inlet passage which isexperienced when the control is effected by a needle valve or valve oflong taper operating in a necessarily small aperture. An obstructionsuch as a clot or impurity in the oil which might clog such a smallaperture will at the worst only obstruct a very small portion of thearea of the tablet and disk valve.

I claim 1. In a carburet-ing device for an internal combustion chamber,in combination with a chamber through which the air is drawn fordischarge toward the motor cylinder, a main valve for controlling thevolume of the supply to said cylinder; a tablet formed on the interiorwall of such chamber; a liquid supply duct opening through such tablet;a flat-faced disk mounted for seating on such tablet to close the fluidinlet therethrough; means for withdrawing the disk from the tablet, andmeans for opening the main supply valve, said means constructed so as tocause a proportional and relatively small movement of the disk incomparison with the opening movement of the main valve.

2. A carburetor for an internal combustion motor comprising a chamberthrough which air is drawn toward the motor inlet; a main inlet valvefor controlling the volume of the supply to the motor cylinder; a tabletformed on the inner wall of said chamber; a liquid supply duct openingthrough such tablet; a flat-faced disk mounted for seating on the tabletfor closing such duct; means for operating the main inlet valve; meansfor operating said disk to withdraw it from the tablet, and meansconnecting said main controlling valve and said flat-faced disk forgiving a proportional and relatively small movement to the disk incomparison with the opening movement of the main valve.

3. In a carbureting device for an internal combustion chamber, incombination with a chamber through which the air is drawn toward themotor cylinder, a main valve for controlling the volume of the supply tosuch cylinder; a tablet formed on the interior wall of such chamber; aliquid supply duct opening through such tablet, the upper surface of thetablet comprising, without other interruption, a relatively large areasur' rounding the fluid inlet; a flatfaced disk mounted for seating onsuch tablet to close the fluid inlet therethrough and contact with saidtablet area around the inlet; means for withdrawing the disk from thetablet, and means for opening the main supply valve, said meansconstructed so as to cause a proportional and relatively small movementof the disk away from the tablet in comparison with the opening movementof the main valve.

4;. In a carbureting device for an internal combustion motor, incombination with a chamber through which the air is drawn toward themotor cylinder, a main valve for controlling the volume of the supplyfrom said chamber to such cylinder; an upwardlyfacing tablet formed onthe interior wall of such chamber anterior to said main valve; aliquid-supply duct opening upward through such tablet, the upper surfaceof the tablet comprising a relatively large area surrounding the fluidinlet; a flat-faced disk valve mounted for seating downwardly upon suchtablet to close the fluid inlet there-through, said disk being adaptedfor contact with the extended tablet area around the inlet; leverconnections between the stem of said main valve and the stem of saiddisk valve proportioned for transmitting reduced movement to the diskvalve from the opening movement of the main valve.

5. In a carbureting device for an internal combustion motor, incombination with a chamber through which the air is drawn toward themotor cylinder, a main valve for controlling the volume of the supplyfrom said chamber to such cylinder; an upwardlyfacing tablet formed onthe interior wall of such chamber anterior to said main valve; aliquid-supply duct opening upward through such tablet, the upper surfaceof the tablet comprising a relatively large area surrounding the fluidinlet; a flat-faced disk valve mounted for seating downwardly upon suchtablet to close the fluid inlet therethrough, said disk being adaptedfor contact with the extended tablet area around the inlet; leverconnections between the stem of said main valve and the stem of saiddisk Copies of this patent may be obtained for five cents each, byaddressing the valve proportioned for transmitting reduced movement tothe disk valve from the opening movement of the main valve, and a springoperating on the disk valve to hold the same normally seated.

6. In a carbureting device for an internal combustion motor, incombination with a chamber through which air is drawn toward the motorcylinder; a tablet formed on the interior wall of such chamber; aliquid-supply duct opening through such tablet; a flatfaced disk mountedfor seating on such tablet to close the fluid inlet therethrough;

means for withdrawing the disk from the tablet; a valve which controlscommunication of such chamber with the motor inlet; operatingconnections from such valve to the disk-operating means, saidconnections comprising a lever and a fulcrum for such lever which ismovable therealong to vary the relative movement of said inlet valve andsaid disk.

Dated at Chicago, Illinois, January 2,

EBER HUBBARD. Witnesses:

CHAS. S. BURTON, M. GERTRUDE ADY.

Commissioner of Patents.

Washington, I). G.

